for a population of 800000 subway riders, the numbers of subway trips taken per rider last january are approximately normally di

Answer:

B).35

Step-by-step explanation:

The Central Limit Theorem asserts that for a normally distributed variable X, with mean and standard deviation , sample means' distribution with a size n can be closely approximated by a normal distribution with mean and standard deviation .

This theorem also applies to skewed variables, provided n is at least 30.

In this scenario:

Then

Therefore, the right answer is:

B).35

Answer:

Conclusion from the given data:

a(x) = 2x - 4b(x) = x + 2

Next, we will review each option

First option

Second option

Third option

= x - 6

Fourth option

From the above evaluations, only option A results in a quadratic function